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| All Patents in class 409/287 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,392,747 | Jan. 08, 1946 | F.J. Lapointe | Pull head for broaching machines | broaching machines | |
| 2,849,929 | Sep. 02, 1958 | H.C. Thorstens | Broaching Attachment | broaching machines | |